Maintenance schedule for gas engine, Troubleshooting guide – DeVilbiss WG1530 User Manual

Page 11

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11

EVERY 5 HOURS

OR DAILY

X

100 HOURS OR

EVERY SEASON

MAINTENANCE OPERATION

Check Oil Level

Change Oil *

Change Air Filter

Replace or Clean Spark Plug

Clean exterior of pressure washer

50 HOURS OR

EVERY SEASON

X

NOTE 2

25 HOURS OR

EVERY SEASON

MAINTENANCE SCHEDULE FOR GAS ENGINE

X

NOTE 1

X

X

NOTE 3

*Change oil after first 2 hours then after every 25 hours.
Note 1: Change oil every 25 hours when operating under heavy load or in high temperatures.
Note 2: Clean more often under dusty conditions.
Note 3: Clean exterior with cloth or brush. Do not use high pressure spray to clean pressure washer or

engine.

PROBLEM

REMEDY

CAUSE

Engine will not start or stops while
operating.

Engine is running but pump is not
building maximum pressure or has
irregular pressure.

Engine is overloaded.
Water leaking from head.

Water leaking from bottom of pump.
Oil leaking from bottom of pump.
Noisy Pump.

No low pressure detergent delivery.

• Fill with gasoline.
• Turn to "ON" position.
• Replace spark plug.
• Set lever to "Full Choke" position
• Reduce pressure at pressure

regulator knob.

• Attach wire to spark plug.
• Replace fuel tank cap.

• Open water faucet.
• Thaw out unit completely.
• Straighten hose.
• Clean water inlet screen.

• Adjust pressure regulator

clockwise for more pressure.

• Replace nozzle.
• Run unit with gun open and

wand removed.

• Clean nozzle.
• Take to Authorized Service

Center.

• Take to Authorized Service

Center.

• Take to Authorized Service

Center.

• Push nozzle forward.
• Unplug siphon hose.
• Take to Authorized Service

Center.

• Open detergent regulator.

• Low on fuel.
• Ignition switch in "Off" position.
• Faulty spark plug.
• Cold engine/engine not choked.
• Unit loaded during start-up.

• Spark plug wire loose.
• Fuel tank not venting properly.

• Water faucet closed.
• Unit has been allowed to freeze.
• Garden hose kinked.
• Water inlet screen clogged with

debris.

• Pressure regulator on pump not set

correctly.

• Unsuitable or worn out nozzle.
• Air trapped in pump.

• Nozzle partially blocked.
• Head O-Ring worn.

• Piston seals worn.
• Piston seals worn.
• Pump sucking air.

• Nozzle set in wrong position.
• Siphon hose or filter plugged.
• Siphon check valve clogged in

pump.

• Detergent regulator on pump closed.

TROUBLESHOOTING GUIDE

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